13y+14=12y+8y-21

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Solution for 13y+14=12y+8y-21 equation: 



13y+14=12y+8y-21

We move all terms to the left:

13y+14-(12y+8y-21)=0

We add all the numbers together, and all the variables

13y-(20y-21)+14=0

We get rid of parentheses

13y-20y+21+14=0

We add all the numbers together, and all the variables

-7y+35=0

We move all terms containing y to the left, all other terms to the right

-7y=-35

y=-35/-7

y=+5

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